Electrical connecting device.



S. T'ROOD. ELEQTRICAL CONNECT'ING DEVICE. APPLICATION FILED III/III. I. 191s.

Pawn-tea OCI. 31,1916.

onirico LEBLEGTRGATL CCNMEGTEQG Dim/EGEL 19209279230 Speoiicetion of Letters ietent. {Cm/50 3L litigi@ To all 'whom it may concern:

Be it known tli'ot l, SAMUEL 'lfnoooy e citizen of the United States. and o resident of Edgewood Perk, in the county oi olie gheny and State of Pennsylvania, lieve in vented a nevir end useinl improvement in Electrical Connecting Devices, oitwbicli tbe following ie' a specification.

My invention relates to electrical connect ing devices and it has special, reference to plug and socket connectors, suoli es ore einH ployed for sed irons, electric lieetore'ond the like.

'One Object of my invention is toprovide an electrical connector embodying menne adapted to prevent unexpected interruption of the circuit, as from en accidentel pull on the connector.

Another object of .my invention is to provide a connector which ein-'di be inexpensive and compact in construction end pleasing in appearance.

Heretofore, in the cose of nieny ping-andsocket connectors, in accidentel poli on tlic cord or the connector seperated the contact members and thereby interrupted the cir.- cuit. According; to my invention, l provide a peculiar construction which serves to lock the contact members in closed poeitionwlien the cord or connector'fis pulled, ond, conse quently, the circuit cannot be accidentally interrupted. However7 e Simple ineens is provided for `breakin@` contact when required. l

,In the accompanying drawing, 'Figure i is a longitudinal section of a connector ernbodying my invention. Fig. 2 is o section on the line lli-ll ot the Fig. l showing the construction of parte and .tbe electrical connections; and Fig. 3 is o. longitudinal section of o. modification of my invention.

Referring to the drawing', o plug connector l consists of o stationery poet 24, provided With a'bi'ilbonsiieod 3 and preterebly connected to o load circuit; and o.

socket member i having parte engaging' the heed 3 .and preferably connected to tbe supply circuit. The poet 2 be eyiin "dried, es shown, or oteny other editable form, and Vis attached to e bose 5' in any convenient position from which it spaced by suitable insulatingl pieces 5e.

The member [i of the connector cojmpriees an outer cylindrical casing f6 ot. insulating;

, le provi materiel. and en inner shell 'i' of conducting; insite l.' tbe interiorly thickened lower end of 'Winch ie shaped to forni a relatively small tubuiunieuriece S, and an inverted frostdeonicel extension surface 8%. A rcniovable con 9 siidobly engages the outerl end 61 casing 6, end e forked clip if)7- edeptcd ici' engagement with the bead 3, nos ite cl :l 1l held Within the cap 9 und its torlcfd end in proximity to the enriocos S. belicei compression spring lil cete between tlie upper end of the Shell i" end ring; member i2 that engages the forked clip l() its. junction point, 'for keeping the 'parte ci scid clip Within predeterrfi mined limito of position. The spring 12 isu electricuily connected to both the Shellv 7 end the clip i0 sind 'serves to clamp said clip between tbe head 3 end the surface 8.

iii.. Supply conductor i3 projects through o buelinig iLl-eoeted in one eide of the casing (i, and ie connected to tbe shell "2".-ond. conseqnently.7 to the clip l()7 by ineens Ofc rinfv` i5. 4

A mourning tbe'connector to be in the posi tion sliou'n in Fig. i, to open the circuit, the cop 9 is reieed to broc I elle Contact of the clip l0 with tbe heed 3 of tbe post 2, when the coeing G may be removed, thus completely e However ii the snp ly conductor 13 or the casing le pulled W en the connector is in 'closed position, the Contact in said connector noting the clip fromthe post.

Reference may now be had to Fig. 3, in

which e modified :torni of the socket member -i ie employed in cooperation with the stationery ter oinel poet 2. The socket member Acompri an insulating casing l16, en eeeocioteil clamping yinenober l? and a Contact member l@ having e biurceted contact end 2:2. The casing; 16 ot non-condnct4 nieto 'ci may be of any suitable torni and ite top u three( 'monino tol receive a conductlhe clamping niernber l? u inverted iruetdconicel :or iooiringtlie contact f poeition in the manner "on with Fig. il, and the wed into the cesingl interior members said ineinbenfie Well i9 tney be' provided With'- or is attached thereto in any other suitable manner. The outer end E23 of the member 18 is screwed into an opening 24 in the conconnectedy to the member 18A in `any other suitable manner. v

lt vill be understood that the clamping, action of the connector shown in Fig. 3 is identical with that of the connector of Fig.

fi. The process of making` or breaking contact, however, is dierent. connector to be in the closed position shown in Figa 3, the process of breaking' contact involves a turningl and 'upward movement of the member 18 by means of the knob 25 and the threaded portion 23 until said inember has moved completely out of contact With the head v3.

l do not Wish toA be restricted to the specific structure and details herein .set forth, but desire that only such limitations shall be imposed as are indicated in the iolloivingg` claims.

claim my invention:

l. An electrical connector comprising relatively movable cooperating contact mein'- bers, a siipporting means for one of the said members, means dependent l upon `an 'initial movement of the said supporting means for forcing the said members into lookingen-4 gagement and means movable independently ofthe supporting means for disengaging the said members when it is moved outwardly.

'2. An electrical connector comprising a stationary contact member, a movable contact member having apli'irality ot resilient parts, a supporting member for the movablev contact member having an inwardly inclined p surface for engaging the said parte under predetermined conditions 'and means interposed between the said parts and the supporting member for disenga'ging the said contact'members when! it isy moved outwardly.

3. ln an electrical connector, `the conibination with relatively movable coperating Contact` members, o' means for resilientlysupporting one of said members,

means associated with said supportingr means and dependent upon ari-initial move*- ment thereof for preventing disengagement.

of said contact members, and means movable independently of said supporting means, for disengaging said members 4. ln lan electrical connecting the combination with relatively movable coperating contact members` or' airincasing socket for supporting one of said members, a yield-r ing' connector interposed between the ksaid member and its soclgct, \\'edgin\means constitiiting one portion of said 'socket and dcpendcnt upon an initial movement thereof cooperating Assuming the said membersn 5. An yelectrical connector 'comprising a supporting member having an inwardly inclined surface, a resilient movable rContact member 'disposed entirely Within the sup porting member but normally out of enf gagement with its inclined surface, a stationary contact member adapted to cause the resilient contact member to engage the inclined surface to retain the Contact r,members in operative engage'-V meiit, and means for edecting disengagement of the Contact members `When it is rinoved outwardly. y

6. in electrical connector comprisingr a stationary contact member having a bulbous i 'portiom a resilient movable'contact mein-y ber'7 a supporting memberr for kthe lmovable contact member having an inclined innery surface, said movable contact member being disposed entirely within the supporting member but normally ont yor' engagement with its inclined surface, means associated with the supporting member-for effecting stationary contact member having a balloons portion, a resilient movable contact member, a supporting member for the movable contact member having an inclined inner sun4 face, said movable contact member being disposed entirely Within the supporting member but normally out of engagement with its inclined surface, Vresilient means for caiisiiig the movable ycontact member to engage the' inclined surface ander predetermined conditions to effectively ,grip the bulboiis portion of the stationary. contact member, and means for eilecting disengage-` ment of the contact members when it is moved outwardly.

8. ln an electrical connector,

and a cooperating movable Contact member, of an incasing socket' for supporting the movable member and having,r a kportion normally out of engagementy with the movable member for'coperating with the contact members only when 'they are in engagement, means associated with the said socket for maintaining a predetermined i'iressure be;

- tween tlic'said contact members,y and means for effecting*disengagement of the contact members when it is moved outwardly. i). ln an electrical connector, the combinati'on with a stationary contact member y the com- 'i bination with a stationary contact member y memes ggg and a coperatng movable contaet'member, of an incasing socket having e Wedgeshaped surface normally out of engagement With the movable Contact membel1 and 5; adapted to force the Said. Contact members 'qnto engagement with each other, resilient means associated with the said socket for mmntaning a, predetermneclpressure be- 'zween the said Contact members, and means for eecting disengagement of the Contact 10 members when it is moved outwardly.

In testimony whereof, I have hereunto subscribed my name this .18th day of' February, 1913. y

SAMUEL TROD. Witnesses B. B.- Hines, M. C. MERZ. 

